This name is a synonym of Dactylorhiza kalopissii subsp. pythagorae (Gölz & H.R.Reinhard) Kreutz.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 55543) with original publication details: Mitt. Arbeitskreis Heimische Orchid. Baden-Württemberg 24: 58 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:960916-1.
This name was in version 1 of The Plant List, record kew-55543, and has not been changed.